client.py 文件源码

def _get_waiter_config(self):
        if 'waiter_config' not in self._cache:
            try:
                waiter_config = self._loader.load_service_model(
                    self._service_model.service_name,
                    'waiters-2',
                    self._service_model.api_version)
                self._cache['waiter_config'] = waiter_config
            except DataNotFoundError:
                self._cache['waiter_config'] = {}
        return self._cache['waiter_config']